Those who can't do ATTEMPT to teach. There's no such thing as perfect form or technique. People do what works for them and there is no guarantee that by fixing form you will be any better.

That is what I tell others about my putting style using more an open hand guide track with the non throwing hand. I did remake my putting in 2014 from a feet togther but I have since modified from the classic darts stance to a more open darts stance with the front foot pointed at the pole and back foot facing same way just further back in parallel. In 2017 adding a back kick in the Ricky/Simon style getting more and more until 35-40 feet it is time to switch to my approach disc then I start over as the disc is more OS then a putting putter. I have it so now there are steps for my putt so I know how to do my putt.

Old putt was a free throw basketball style that worked at the time due to my time playing/practicing disc golf. Before that I used with the Rubber putter the open leg stance and a normal hand use with no movement at knees just bent slightly as that 168 gram Rubber Putter had so much glide I could not throw the disc hard at all for putts ~20 feet and shorter So I used the slowest putt style I could think of besides Turbo as that would not have enough power. I had hands that even now that are too small to do a Turbo putt so I do a Flick putt both standard forehand putt and often unless I need clear a taller obstacle I have elbow bent at ~90 degrees with flick and wrist snap style if I have no room to do the forehand putt that I developed practicing putts in the back yard.